GTX HM & Maxlife HM....list spec's please....

[Ramblin Fever]

Anyone readily have the spec sheets for these 2 oils?

Trying to decipher the differences.

My sister uses the GTX in her minivan, says she loves it versus the Maxlife she used before....but yet, she's not quite sure why she likes it versus the other.

I will be performing an oci on her van here, and am getting ready to do the same on my HM Isuzu which is running Maxlife. Would like to put them both on the same oil.

 

[rg200amp]

I do not have spec sheets, but Maxlife has a very large following behind. If you want a great High Mileage oil, I would use the High Mileage maxlife synthetic.

 

[Drew99GT]

Castrol only publishes the kinematic viscosity, which is around 12 Cst @ 212f for the 30 weights. Maxlife is a little bit thinner at around 11.5 Cst, but still thicker than a regular SM/GF-4 energy conserving oil.

I'd give the nod to Maxlife since it's a synthetic blend. Likely has a lower pour point and better MRV/CCs specs compared to Castrol. Maxlife also has 300 ppm moly for the moly fetish people.

 

[TallPaul]

Product data sheets are available on Valvoline.com

Would think Castrol has similar data on their website.

 

[Drew99GT]

Originally Posted By: TallPaul

Would think Castrol has similar data on their website.


They don't.

 

[ARB1977]

Just switched to Maxlife 5W30 in the Taco and soon in the Jetta. Got pretty lucky and found two 5 qrt jugs of the full synthetic. Will not hesitate to use the blend.

 

[VK56VD]

How does the Pennzoil High Mileage compare to these two?

 

[Triple_Se7en]

With issues regarding the need to use High Mileage oils, I have found that the best bang for the buck are the two cheapest brands.... Supertech High Mileage at Walmart and Meijer (Citgo) High Mileage at all Meijer stores.

 

[Ramblin Fever]

So Castrol is slightly thicker?

Which one has the edge for better seal conditioning?

 

[strombony]

Supertech High Mileage is energy conserving...how about that one?
Anyone know what the magic bullet is to creating a High Mileage oil that is energy conserving and why the least expensive brand is able to do it?

 

[FrankN4]

"Oils labeled as "Energy Conserving" have passed the test that measures an oil's ability to conserve energy. Widespread use of engine oils with this designation should result in an overall saving of fuel in the vehicle fleet as a whole, but a particular vehicle operator may not experience a fuel savings as a result of using these oils."

The above is from the API web site.

There is a quality of a motor oil called HTHS=High Temperature High Shear. This is the ability to maintain viscosity at very high temperatures. I believe it is measured at 150C/302F. Most standard 10w30 synthetics will have a HTHS of around 3.1. A high mileage oil COULD have a HTHS of around 3.5, or better, but does not have to.

Since there are no standards(that I am aware of) for High Mileage oils, you could take any 5W or 10w30 oil, add some or extra seal conditioners, moly, boron, and antioxidant, in any combination, and you have a High Mileage oil.

The High Mileage oil I recommend to people who ask is Mobil 1 10w30 or 40. They take a heavy duty oil, HTHS of 3.5 or better, add 1000 ZDDP, extra moly, extra boron, extra antioxidants, and extra seal conditioners. This oil, even in 10w30 would not meet the energy conserving standards because it is a heavy duty oil.

 

[Ramblin Fever]

My apologies, but I could care less about energy conserving rated oil, I have one high mileage SUV that does wonderful on NON-energy conserving oil, i.e. used to run Rotella synthetic 5w-40 diesel oil in this engine.

I have used energy conserving oil in this engine, gas mileage is the same, but used oil analysis are better on a heavier duty oil for this engine.

Again, my question is regarding Maxlife or Castrol High Mileage, these are the only 2 oils I'm interested in, as my other truck uses Castrol syntec, and my sister's 2 vehicles either use Maxlife in one and Castrol High Mileage in the other.

What I'm curious of, is if I can pick ONE oil for all 4 vehicles and call it good.

Just wondering if Castrol High Mileage is rated as good as the Maxlife? I understand Maxlife is synthetic-blend, but does it REALLY have a jump over Castrol High Mileage?

 

[VK56VD]

I don't think anyone can answer your question other than you and your vehicles. Run each and perform a used oil analysis on each vehicle. The used oil analysis will tell you which is better.

Originally Posted By: Ramblin Fever
My apologies, but I could care less about energy conserving rated oil, I have one high mileage SUV that does wonderful on NON-energy conserving oil, i.e. used to run Rotella synthetic 5w-40 diesel oil in this engine.

I have used energy conserving oil in this engine, gas mileage is the same, but used oil analysis are better on a heavier duty oil for this engine.

Again, my question is regarding Maxlife or Castrol High Mileage, these are the only 2 oils I'm interested in, as my other truck uses Castrol syntec, and my sister's 2 vehicles either use Maxlife in one and Castrol High Mileage in the other.

What I'm curious of, is if I can pick ONE oil for all 4 vehicles and call it good.

Just wondering if Castrol High Mileage is rated as good as the Maxlife? I understand Maxlife is synthetic-blend, but does it REALLY have a jump over Castrol High Mileage?

 

[J_Myler]

Originally Posted By: ARB1977
Just switched to Maxlife 5W30 in the Taco and soon in the Jetta. Got pretty lucky and found two 5 qrt jugs of the full synthetic. Will not hesitate to use the blend.

Got pretty lucky? You might be the luckiest guy around.

 

[Ramblin Fever]

Hmmm, ok, just surprized no one has an opinion from experience on which one they thought worked better.

No biggy...maybe i'll try something strange and throw half/half in each vehicle and see what comes out.

Kidding of course.

I do used oil analysis once a year on my 2 vehicles, my sister's not going to spend the money on hers, it's not that important to them.

Thanks for the input...I'll leave their oil decision to them and just use Maxlife in my older truck, since I don't have any informative information and with Castrol raising their pricing, it's probably not worth the money anyhow.

 

[Drew99GT]

I've been using Maxlife for sometime now in my 94 Corolla and it likes this oil over anything else, just based in perceived noise, smoothness etc. Plus, it has dramatically helped cut oil consumption. It seems to stay clearer longer as well, which to my untrained eye might mean it's providing a better piston seal and reducing blow-by (which accounts for the drop in oil consumption).

I get nice easy quiet cold starting even with 10w30 during winter. Manual recommends 10w30 down to 0 degrees and it has less consumption with 10w30 compared to the 5w30.